Finding the Fourth Proportional to 1,338.25, 1,847.93 and 841.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,338.25 : 1,847.93 = 841.72 : x
2. Step 2: Convert to fraction form
   1,338.25/1,847.93 = 841.72/x
3. Step 3: Cross multiply
   1,338.25x = 1,847.93 × 841.72
4. Step 4: Simplify right side
   1,338.25x = 1,555,435.43
5. Step 5: Solve for x
   x = 1,555,435.43/1,338.25
6. Step 6: Final answer
   x = 1,162.29